CN111511062A - Lamp, lamp control system and method - Google Patents
Lamp, lamp control system and method Download PDFInfo
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- CN111511062A CN111511062A CN202010544213.6A CN202010544213A CN111511062A CN 111511062 A CN111511062 A CN 111511062A CN 202010544213 A CN202010544213 A CN 202010544213A CN 111511062 A CN111511062 A CN 111511062A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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Abstract
The application discloses a lamp, a lamp control system and a lamp control method. The lamp comprises a plurality of pixel points; the processor is used for generating a corresponding control signal according to the program signal; the driving chip is provided with a plurality of groups of pixel output channels, the input end of the driving chip is connected with the output end of the processor and is used for receiving and decoding the control signal and outputting a plurality of paths of pulse width modulation signals through the plurality of groups of pixel output channels; and the input end of the drive control circuit is connected with the multiple groups of pixel point output channels, the output end of the drive control circuit is connected with the multiple pixel points, and the drive control circuit is used for driving the multiple pixel points to emit light according to the multi-path pulse width modulation signals. The lamp is provided with the pixel points, the density of the pixel points in the environment is favorably improved, the use of the processor is reduced, and the market competitiveness of the lamp is improved.
Description
Technical Field
The invention relates to the technical field of photoelectric display, in particular to a lamp, a lamp control system and a lamp control method.
Background
With the diversification of lighting decorations, lamps in the market are increasingly required to realize high-density lighting. However, in the conventional lighting device, one microprocessor only controls one pixel point, and the size of the lighting device is large, so that a large area of conditions is often required to realize large-scale lighting in the lighting process, such as one or more wall combinations of a building.
Therefore, how to develop a lamp with high-density pixels so as to realize program lightening even in a small-area environment becomes a problem to be solved urgently.
Disclosure of Invention
In view of this, it is necessary to provide an improved lamp, which is directed to the problem that it is difficult for the conventional lamp to realize program lightening in a small-area environment.
A luminaire comprising a plurality of pixel points; the processor is used for generating a corresponding control signal according to the program signal; the driving chip is provided with a plurality of groups of pixel output channels, the input end of the driving chip is connected with the output end of the processor and used for receiving and decoding the control signal and outputting a plurality of paths of pulse width modulation signals through the plurality of groups of pixel output channels; and the input end of the drive control circuit is connected with the multiple groups of pixel point output channels, the output end of the drive control circuit is connected with the multiple pixel points, and the drive control circuit is used for driving the multiple pixel points to emit light according to the multiple paths of pulse width modulation signals.
The lamp is provided with a plurality of pixel points, and the processor of the lamp can control the pixel points to emit light, so that the density of the pixel points in the environment can be improved, and the program can be lightened in a small-area environment; meanwhile, the use of a processor can be reduced, the cost of the brightening decoration project is obviously reduced, and the market competitiveness of the lamp is improved.
In one embodiment, the drive control circuit includes: the input end of the phase inverting circuit is connected with the multiple groups of pixel point output channels and is used for inverting the multiple paths of pulse width modulation signals; and the input end of the constant current driving circuit is connected with the output end of the phase inverting circuit, the output end of the constant current driving circuit is connected with the plurality of pixel points, and the constant current driving circuit is used for generating current signals according to the inverted multi-path pulse width modulation signals and driving the plurality of pixel points to emit light.
In one embodiment, the inverting circuit includes a plurality of inverters, and an input end of each of the inverters correspondingly receives one of the pwm signals and inverts the one of the pwm signals.
In one embodiment, the driving chip has at least three groups of pixel output channels, and each group of pixel output channels outputs at least three paths of the pwm signals.
In one embodiment, the driving chip comprises an SM 169912 chip, an SM16812 chip, an SM16809 chip or an SM16909 chip.
The application also provides a lamp control system.
A luminaire control system comprising: the system comprises a playing system and a plurality of lamps, wherein the playing system is used for outputting program signals and is in communication connection with the lamps through a switch; and the feedback system is electrically connected with the lamp through the switch and is used for acquiring the state information of the lamp.
The lamp control system can realize the series connection of a plurality of lamps even in a small-area environment, and meet the arrangement requirement of pixel points, thereby realizing the program lightening in a small-area range; meanwhile, the state of each lamp can be monitored through a feedback system, so that the on-off, voltage or current of the lamps can be adjusted by workers in time, and the normal operation of program brightening is ensured.
The application also provides a lamp control method.
A luminaire control method for controlling the operation of the luminaire control system as described in the foregoing, comprising:
controlling the playing system to output the program signal at a first baud rate so that the lamp can execute program lightening according to the program signal;
in the interval when the playing system does not output the program signal, controlling the feedback system to output a query signal at a second baud rate so that the feedback system acquires the state information of the lamp;
wherein the first baud rate is greater than or equal to the second baud rate.
According to the lamp control method, the program can be played by utilizing the larger first baud rate, so that more lamps can be connected in series at the port of the playing system, the program brightening effect is improved, and the market competitiveness of the lamps is improved; and Remote Device Management (RDM) can be carried out at the second baud rate by switching the baud rate, so that the normal progress of program lightening is ensured.
In one embodiment, before controlling the playing system to output the program signal at the first baud rate, the method further includes: and setting the address code and the identity information of each lamp.
In one embodiment, the step of controlling the feedback system to output the query signal at a second baud rate to obtain the status information of the lamp specifically includes, at the second baud rate: controlling the feedback system to collect the identity information of the lamp according to the address code of the lamp; and controlling the feedback system to identify the corresponding lamp according to the collected identity information of the lamp, so that the lamp feeds back the state information of the lamp to the feedback system.
In one embodiment, the first baud rate ranges from 250K to 1000K.
Drawings
Fig. 1 is a schematic system structure diagram of a lamp according to an embodiment of the present application;
fig. 2 is a schematic diagram of a driving chip of a lamp according to another embodiment of the present application;
FIG. 3 is a schematic view of a system structure of a lamp according to another embodiment of the present application
FIG. 4 is a schematic view of an inverter circuit of a lamp according to yet another embodiment of the present application;
fig. 5 is a schematic diagram of a sub-constant current driving circuit of a channel of a lamp according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of a lamp control system according to an embodiment of the present application;
fig. 7 is a flowchart illustrating a lamp control method according to an embodiment of the present application.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," "circumferential," and the like are based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
With the progress of scientific technology and the improvement of design level, the industry has made higher demands and expectations on the control effect of the light. The lamp can be applied to the fields of brightening and decorating such as dot matrix screens developed by light emitting diodes, decorative light bars, advertisement modules, landscape lighting and the like, in particular to the fields of building brightening, landscape decoration, stage lighting, display signboards and the like.
However, in the conventional technology, a processor (MCU) of one lamp usually controls only one pixel, the number of the processors is large when lighting the lamp, which is easy to increase the cost, and the distance between the lamp and the lamp is increased, so that the lighting requirement can be met by a large-area environment, thereby limiting the application range of lighting the lamp.
The defects existing in the above solutions are the results obtained after the inventor has practiced and studied carefully, so the discovery process of the above problems and the solutions proposed by the following embodiments of the present application for the above problems should be the contribution of the inventor to the present application in the process of the present application.
The application provides a lamps and lanterns 10, a plurality of pixel of accessible processor control to showing the density that promotes the pixel in the brightening environment, reducing the area of laying out the light, promoting lamps and lanterns's market competition. Specifically, each pixel point can occupy three channels of R (red), G (green) and B (blue) or four channels of R (red), G (green), B (blue) and W (white). In addition, a plurality of lamp beads (the number of the lamp beads depends on the design of circuit hardware in the lamp) are arranged in the lamp, and each pixel point can occupy one or more lamp beads according to the actual demand of program lightening.
Referring to fig. 1, a lamp 10 includes a processor, a driving chip, a driving control circuit, and a plurality of pixels, which are connected in sequence.
The processor may be configured to generate a corresponding control signal based on the program signal. Specifically, the processor acquires corresponding parameter information in the program signal according to the channel of the processor, and generates a corresponding control signal according to the parameter information. The control signal is formed by a plurality of data packets, if the program signal is transmitted at a baud rate of 250k, one data packet may include 512 data frames, one data frame represents dimming data of one channel, and theoretically, 512 control channels may be supported. The 8-bit data frame can be set to have 0-255 gradients, representing 0-100% gray scale values. In other embodiments, if the program signal is transmitted at a higher baud rate, such as 500 kbaud, then one packet may include 1440 frames of data, which correspondingly indicates 1440 channels of control.
And the driving chip is provided with a plurality of groups of pixel point output channels, and the input end of the driving chip is connected with the output end of the processor and used for receiving and decoding the control signal and outputting a plurality of paths of pulse width modulation signals through the plurality of groups of pixel point output channels. Specifically, the driving chip may have two, three, four or more groups of pixel output channels, wherein one group of pixel output channels may occupy R, G, B three output channels or R, G, B, W four output channels, and may be specifically selected according to the actual requirements of program brightening. In addition, the number of the driving chips can be multiple, two adjacent driving chips are connected in series and adopt single-wire communication, and a signal decoding module and a data caching module can be integrated in each driving chip to decode the received control signal and further output a corresponding Pulse Width Modulation (PWM) signal from each output channel.
And the input end of the drive control circuit is connected with the output channels of the multiple groups of pixel points, and the output end of the drive control circuit is connected with the multiple pixel points. The driving control circuit is used for driving the plurality of pixel points to emit light according to the multi-path pulse width modulation signals. The drive control circuit may be driven by voltage or current. In addition, in order to meet the driving power requirement of the pixel point, the inversion adjustment can be carried out on the PWM signal output by the driving chip so as to ensure the normal luminescence of the pixel point.
When the processor receives the program signals, the processor screens the received program information, only stores the program parameter information corresponding to the address of the processor, generates corresponding control signals (such as channel gray values), transmits the control signals to the driving chip through the analog serial port, and generates PWM signals corresponding to the channels after the driving chip receives the control signals. When a plurality of driving chips are cascaded, each driving chip needs to indicate the light-emitting gray scale of the pixel point matched with the driving chip through the received control signal, and theoretically, any static or dynamic pattern can be displayed through the driving chips and the light-emitting elements as long as the driving chips are enough. Meanwhile, when any one driver chip extracts the required data from the control signal, the control signal must be continuously transmitted to other subsequent driver chips, that is, the driver chip has a data forwarding function, and all driver chips can completely display the expected pattern in a pixel point mode when the control signal is extracted. In addition, the driving chip receives and transmits the control signal according to a preset communication protocol rule in the process of executing the communication task, and when the driving chip receives the control signal which is not in accordance with the specification, the driving chip can directly drive the matched pixel points to be extinguished, so that the display disorder is avoided.
For example, if the address of one lamp is 1 (i.e. the initial lamp of a plurality of lamps connected in series) and has 48 pixels, the processor of the lamp filters out the gray values of 1-144 channels after receiving the program signal, and the processor communicates with the driver chip through the analog serial port by using the 144 gray values as parameters. If one driving chip has 4 groups of pixel output channels, and each group of pixel output channels occupies R, G, B three output channels, 12 driving chips are required to be connected in series, and the 12 driving chips are communicated in sequence. The first driving chip converts the received gray scale parameter values of the 12 channels into corresponding PWM signals to be output, controls the pixel points connected to the first driving chip to emit light, and simultaneously sequentially transfers the remaining 132 gray scale parameter values to the subsequent driving chips, thereby controlling the brightness and color conditions of the lamp 10.
The lamp 10 has a plurality of pixel points, and the processor of the lamp 10 can control the plurality of pixel points to emit light (for example, the number of the pixel points may be, but is not limited to, 24, 48, or 60) only by being responsible for acquiring the program signal parameters, so that the density of the pixel points in the environment can be improved, and the program can be lightened in a small-area environment; meanwhile, the lamp 10 can also greatly reduce the number of processors, so that the cost of the brightening decoration project is obviously reduced, and the market competitiveness of the lamp is improved.
In an exemplary embodiment, the driving chip may have at least three groups of pixel output channels, and each group of the pixel output channels outputs at least three pulse width modulation signals, please refer to fig. 2, taking an SM 169912 chip as an example, the SM 169912 chip is a 12-channel L ED driving control chip with single-line, serial transmission, which is compatible with and expands the DMX512(1990) data protocol, and includes a power clamp module, a timing control module, a signal decoding module, a data buffer module, etc. for a case where one pixel occupies three channels of R, G, B, one SM 169912 chip may correspondingly control four pixels to emit light, and similarly, for a case where one pixel occupies four channels of R, G, B, W, one SM 169P chip may correspondingly control three pixels to emit light, as shown in fig. 2, two SM 169912 chips may be connected in series to control 6 pixels to emit light through one processor, thereby effectively increasing the pixel density in the luminaire 10, expanding the lighting environment of the luminaire, and reducing the number of processors, and reducing the cost of the lighting engineering.
In an exemplary embodiment, referring to fig. 3, the driving control circuit may include: the input end of the phase inverting circuit is connected with the output channels of the multiple groups of pixel points and is used for inverting the multiple paths of PWM signals; and the input end of the constant current driving circuit is connected with the output end of the inverter circuit, the output end of the constant current driving circuit is connected with the plurality of pixel points, and the constant current driving circuit is used for generating current signals according to the inverted multipath PWM signals and driving the plurality of pixel points to emit light. Because the multi-path PWM signals output by the driving chip are rectangular square waves, the PWM signals can be adjusted according to the driving conditions (such as the height of a driving level or the duty ratio of the driving level) of the constant current driving circuit, and the normal work of a plurality of pixel points is further ensured. In some embodiments, the PWM signal may be inverted, that is, a high level portion of the original PWM signal is converted into a low level portion, and a low level portion of the original PWM signal is converted into a high level portion, so as to meet the requirement of the constant current driving circuit for the driving level.
Furthermore, the inverter circuit may include a plurality of inverters, and an input end of each inverter correspondingly receives one of the pulse width modulation signals output by the driver chip and inverts the pulse width modulation signal. Because the driving chip can output a plurality of paths of PWM signals, a plurality of groups of inverters can be arranged in the inverting circuit to respectively invert the PWM signals of each path. Specifically, referring to fig. 4, the inverter circuit may include a plurality of 74HC04 not-gate chips connected in parallel, each 74HC04 not-gate chip has 6 inverters, and as can be seen from fig. 2, for two SM 169912 chips connected in series, 4 74HC04 not-gates are correspondingly allocated to invert 24 PWM signals (PWMR 1-PWMW 4).
As shown in fig. 5, taking the sub constant current driving circuit corresponding to the inverted PWMR1 signal as an example, the sub constant current driving circuit includes a constant current driving chip HD6619, the maximum driving output current of HD6619 is 1.5A, and can be adjusted adaptively to PWM frequency, so as to ensure normal operation of the pixel.
Referring to fig. 6, the present application further provides a lamp control system 20, which includes a playing system for outputting program signals, wherein the playing system can be communicatively connected to a plurality of lamps as described above through an exchange; and the feedback system is electrically connected with the lamp through the switch and is used for acquiring the state information of the lamp.
Specifically, the special port of the playing system can be connected with the switch through a network cable, the switch can adopt a 24-port switch for expanding the network, and the ports of the switch are respectively connected with the lamps to form 24 lamp control circuits. The feedback system is also provided with a control Device, an intermediate Device, and a controlled Device for Remote Device Management (RDM). The basic functions of the control device include: the RDM controls the sending of commands, the receiving of RDM feedback information and the displaying of RDM information. The basic functions of the device under control include: and receiving the RDM control command and sending the RDM feedback information. The basic function of the intermediate device is mainly to be able to guarantee a bidirectional transmission of signals in the data network.
The lamp control system can realize the series connection of a plurality of lamps even in a small-area environment, and meet the arrangement requirement of pixel points, thereby realizing the program lightening in a small-area range; meanwhile, the state of each lamp can be monitored through a feedback system, so that the on-off, voltage or current of the lamps can be adjusted by workers in time, and the normal operation of program brightening is ensured.
The present application further provides a luminaire control method for controlling the operation of the luminaire control system as described above, including:
s301, controlling a playing system to output a program signal at a first baud rate so that a lamp can execute program lightening according to the program signal;
s302, in a gap when the playing system does not output the program signal, controlling the feedback system to output the query signal at a second baud rate so that the feedback system acquires the state information of the lamp;
the first baud rate is greater than or equal to a second baud rate, and the second baud rate can be 250k in the international standard.
Specifically, referring to fig. 7, when the playing system outputs the program signal at the first baud rate, the lamp also performs program lightening at the first baud rate; when the playing system does not output the program signal, the lamp control system can send out a first baud rate switching command, the feedback system outputs a query signal at a second baud rate, and the lamp correspondingly switches the baud rate from the first baud rate to the second baud rate to execute the feedback operation (RDM) of the state information of the lamp; and after the feedback is finished, the lamp control system quits the RDM and sends out a second baud rate switching command, the playing system continues to output program signals at the first baud rate, and the lamp correspondingly switches the baud rate from the second baud rate to the first baud rate to continue to brighten the program.
According to the lamp control method, the program can be played by utilizing the larger first baud rate, so that more lamps can be connected in series at the port of the playing system, the program brightening effect is improved, and the market competitiveness of the lamps is improved; and Remote Device Management (RDM) can be carried out at the second baud rate by switching the baud rate, and the on-off, voltage or current of the lamp can be timely adjusted by the staff according to the obtained state information, so that the normal operation of program brightening is ensured.
In an exemplary embodiment, with continuing reference to fig. 7, before controlling the playback system to output the program signal at the first baud rate, the method further includes: s300, setting an address code and identity information (UID) of each lamp. The address code is compiled to configure a channel for the lamp, and the identity information is compiled to give an identity to the lamp, so that program signals corresponding to the lamp in a program source can be acquired, and the RDM can be executed.
Further, the step of the feedback system outputting the query signal at a second baud rate to acquire the status information of the lamp specifically includes, at the second baud rate: collecting identity information of the lamp according to the address code of the lamp; and identifying the corresponding lamp according to the collected identity information of the lamp so that the lamp feeds back the state information of the lamp to the feedback system.
The address code is set for each lamp, the UID of the lamp is obtained through the address code, and finally the state information of the lamp is inquired through the UID. The UID information of the controlled lamp can be searched in a similar question-answering mode by means of the address code, and compared with the traditional method, the scheme of the method is higher in efficiency and good in accuracy; meanwhile, the state information of the lamp comprises the on-off circuit, the temperature, the voltage and the current of the lamp, and the accuracy of the obtained state information of the lamp can be ensured by combining various parameters as an accurate interpretation basis, wherein the on-off circuit information of the lamp can be acquired through a driving chip of the lamp, and the accuracy is higher.
In an exemplary embodiment, the first baud rate ranges from 250K to 1000K, and the second baud rate ranges from 250K. The number of channels corresponding to the 250k baud rate is 512, and the number of channels corresponding to the 500k baud rate is 1440, so that the higher the baud rate is, the more the channels corresponding to the higher the baud rate is, the more lamps can be connected into one lamp control system to improve the baud rate, the lamps can be densely distributed in a limited space, and the program lighting in a small-area environment is realized.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A light fixture, comprising:
a plurality of pixel points;
the processor is used for generating a corresponding control signal according to the program signal;
the driving chip is provided with a plurality of groups of pixel output channels, the input end of the driving chip is connected with the output end of the processor and used for receiving and decoding the control signal and outputting a plurality of paths of pulse width modulation signals through the plurality of groups of pixel output channels; and the number of the first and second groups,
the input end of the drive control circuit is connected with the multi-group pixel output channels, the output end of the drive control circuit is connected with the plurality of pixels, and the drive control circuit is used for driving the plurality of pixels to emit light according to the multi-path pulse width modulation signals.
2. The lamp of claim 1, wherein the drive control circuit comprises:
the input end of the phase inverting circuit is connected with the multiple groups of pixel point output channels and is used for inverting the multiple paths of pulse width modulation signals; and the number of the first and second groups,
the input end of the constant current driving circuit is connected with the output end of the phase inverting circuit, the output end of the constant current driving circuit is connected with the plurality of pixel points, and the constant current driving circuit is used for generating current signals according to the inverted multi-path pulse width modulation signals and driving the plurality of pixel points to emit light.
3. The lamp of claim 2, wherein the inverter circuit comprises a plurality of inverters, and an input end of each of the inverters correspondingly receives one of the pwm signals and inverts the one of the pwm signals.
4. The lamp of any one of claims 1-3, wherein the driver chip has at least three sets of pixel output channels, and each set of pixel output channels outputs at least three of the PWM signals.
5. The lamp as recited in claim 4, wherein the driver chips comprise SM 169912 chips, SM16812 chips, SM16809 chips, or SM16909 chips.
6. A luminaire control system, comprising:
a broadcasting system for outputting program signals, the broadcasting system being in communication connection with a plurality of light fixtures according to any one of claims 1-5 through an exchange; and the number of the first and second groups,
and the feedback system is electrically connected with the lamp through the switch and is used for acquiring the state information of the lamp.
7. A luminaire control method for controlling the operation of the luminaire control system of claim 6, comprising:
controlling the playing system to output the program signal at a first baud rate so that the lamp can execute program lightening according to the program signal; and the number of the first and second groups,
in the interval when the playing system does not output the program signal, controlling the feedback system to output a query signal at a second baud rate so that the feedback system acquires the state information of the lamp;
wherein the first baud rate is greater than or equal to the second baud rate.
8. The luminaire control method of claim 7, further comprising, before controlling the playback system to output the program signal at the first baud rate: and setting the address code and the identity information of each lamp.
9. The lamp control method of claim 8, wherein the step of controlling the feedback system to output the query signal at a second baud rate to obtain the status information of the lamp specifically comprises, at the second baud rate:
controlling the feedback system to collect the identity information of the lamp according to the address code of the lamp; and the number of the first and second groups,
and controlling the feedback system to identify the corresponding lamp according to the collected identity information of the lamp so that the lamp feeds back the state information of the lamp to the feedback system.
10. A lamp control method as claimed in any one of claims 7-9, characterized in that said first baud rate has a value in the range of 250K to 1000K.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112497892A (en) * | 2020-12-15 | 2021-03-16 | 固高科技(深圳)有限公司 | Servo driving device and system |
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